增加操作按钮

css/main.css

@@ -276,4 +276,7 @@ body {
 .modal-fixed-height {
     height:400px;
     overflow-y:auto;
-}
+}
+.btn.disabled, .btn:disabled {
+    color: #999;
+}

dinge.html

@@ -42,8 +42,12 @@
                 <div class="row">
                   <div class="main-side col-lg-3 p-0">
                     <div class="tab-bar">
-                      <a href="#" class="btn btn-secondary btn-sm">按钮</a>
-                      <a href="#" class="btn btn-secondary btn-sm">按钮</a>
+                      <a href="" class="btn btn-sm" data-toggle="tooltip" data-placement="bottom" title="" data-original-title="插入"><i class="fa fa-plus" aria-hidden="true"></i></a>
+                      <a href="" class="btn btn-sm" data-toggle="tooltip" data-placement="bottom" title="" data-original-title="删除"><i class="fa fa-remove" aria-hidden="true"></i></a>
+                      <a href="" class="btn btn-sm disabled" data-toggle="tooltip" data-placement="bottom" title="" data-original-title="升级"><i class="fa fa-arrow-left" aria-hidden="true"></i></a>
+                      <a href="" class="btn btn-sm disabled" data-toggle="tooltip" data-placement="bottom" title="" data-original-title="降级"><i class="fa fa-arrow-right" aria-hidden="true"></i></a>
+                      <a href="" class="btn btn-sm" data-toggle="tooltip" data-placement="bottom" title="" data-original-title="下移"><i class="fa fa-arrow-down" aria-hidden="true"></i></a>
+                      <a href="" class="btn btn-sm" data-toggle="tooltip" data-placement="bottom" title="" data-original-title="上移"><i class="fa fa-arrow-up" aria-hidden="true"></i></a>
                     </div>
                     <div class="tab-content">
                       <ul id="treeDemo" class="ztree"></ul>